Core Sleep: 01:40 - 07:10
Nap: 20:20 - 22:00
Today was Saturday, and I have never got up that early without a reason on a weekend. I got up after the core sleep without the alarm clock. Note that I slept less than four full cycles anyway — 5.5 hours. The two explanations are that 1) my sleep cycles are only about 80 minutes, and that 2) I just slept for three cycles and that was enough. I can’t recall taking an hour to fall asleep, so I’m hoping for the former one.
Other than that, I’m still always feeling refreshed. Even though I needed the alarm clock to wake me up from the nap, I never felt any tired.
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